Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Watch ISS spacewalk October 20
Friday's is the last of 3 spacewalks by International Space Station astronauts this month.
October 19, 2017
Traveling to Mars? Top 6 health challenges
NASA aims to have humans on Mars by the 2030s. The people making the long space journey will experience health risks they've never faced before.
October 18, 2017
More evidence for a Planet 9
No new large planet on the outskirts of our solar system has yet been discovered, although evidence is building, astronomers say. By the way, if Planet 9 does exist … it's definitely not headed our way.
October 17, 2017
Gravitational waves: What are they?
If you understand how a trampoline works, you'll be able to understand what gravitational waves are.
October 17, 2017
Gravitational waves, and more, from merging neutron stars
On Monday, LIGO and Virgo announced the 1st detection of gravitational waves produced by colliding neutron stars, and 1st observed in both gravitational waves and light. "It ushers in a new era in astronomy."
October 16, 2017
Egg-shaped Haumea has a ring
Dwarf planet Haumea - which orbits our sun in Pluto's realm of the solar system - has become the first trans-Neptunian object known to be encircled by a ring.
October 16, 2017
Intense storms batter Saturn moon Titan
“I would have thought these would be once-a-millennium events, if even that,” said a researcher. Instead, the storms on Titan happen about once a Saturn-year, creating massive floods in an otherwise-desert terrain.
October 14, 2017
Peering to the Milky Way’s far side
Astronomers use parallax to directly measure the distance to a star-forming region on the opposite side of our Milky Way galaxy, nearly doubling the previous distance record.
October 14, 2017
Asteroid to sweep close October 11-12
Asteroid 2012 TC4 is being used as a test of Earth's global asteroid defense system. How to see it online.
October 11, 2017
This region on Mars may hold clues to earthly life
Evidence for deep-sea hydrothermal vents in the Eridania basin of southern Mars. Even if Mars never had life, this region may tell us about the type of environment where life on Earth may have begun.
October 10, 2017
